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-rw-r--r--arch/x86/include/asm/kvm_host.h4
-rw-r--r--arch/x86/kvm/mmu.c2
-rw-r--r--include/linux/kvm_host.h7
-rw-r--r--virt/kvm/kvm_main.c2
4 files changed, 10 insertions, 5 deletions
diff --git a/arch/x86/include/asm/kvm_host.h b/arch/x86/include/asm/kvm_host.h
index 69b652547489..1769f3dde611 100644
--- a/arch/x86/include/asm/kvm_host.h
+++ b/arch/x86/include/asm/kvm_host.h
@@ -31,6 +31,8 @@
#define KVM_MEMORY_SLOTS 32
/* memory slots that does not exposed to userspace */
#define KVM_PRIVATE_MEM_SLOTS 4
+#define KVM_MEM_SLOTS_NUM (KVM_MEMORY_SLOTS + KVM_PRIVATE_MEM_SLOTS)
+
#define KVM_MMIO_SIZE 16
#define KVM_PIO_PAGE_OFFSET 1
@@ -228,7 +230,7 @@ struct kvm_mmu_page {
* One bit set per slot which has memory
* in this shadow page.
*/
- DECLARE_BITMAP(slot_bitmap, KVM_MEMORY_SLOTS + KVM_PRIVATE_MEM_SLOTS);
+ DECLARE_BITMAP(slot_bitmap, KVM_MEM_SLOTS_NUM);
bool unsync;
int root_count; /* Currently serving as active root */
unsigned int unsync_children;
diff --git a/arch/x86/kvm/mmu.c b/arch/x86/kvm/mmu.c
index aecdea265f7e..715dcb4fb798 100644
--- a/arch/x86/kvm/mmu.c
+++ b/arch/x86/kvm/mmu.c
@@ -1349,7 +1349,7 @@ static struct kvm_mmu_page *kvm_mmu_alloc_page(struct kvm_vcpu *vcpu,
PAGE_SIZE);
set_page_private(virt_to_page(sp->spt), (unsigned long)sp);
list_add(&sp->link, &vcpu->kvm->arch.active_mmu_pages);
- bitmap_zero(sp->slot_bitmap, KVM_MEMORY_SLOTS + KVM_PRIVATE_MEM_SLOTS);
+ bitmap_zero(sp->slot_bitmap, KVM_MEM_SLOTS_NUM);
sp->parent_ptes = 0;
mmu_page_add_parent_pte(vcpu, sp, parent_pte);
kvm_mod_used_mmu_pages(vcpu->kvm, +1);
diff --git a/include/linux/kvm_host.h b/include/linux/kvm_host.h
index 7c654aa46b6c..924df0d7ac5f 100644
--- a/include/linux/kvm_host.h
+++ b/include/linux/kvm_host.h
@@ -227,11 +227,14 @@ struct kvm_irq_routing_table {};
#endif
+#ifndef KVM_MEM_SLOTS_NUM
+#define KVM_MEM_SLOTS_NUM (KVM_MEMORY_SLOTS + KVM_PRIVATE_MEM_SLOTS)
+#endif
+
struct kvm_memslots {
int nmemslots;
u64 generation;
- struct kvm_memory_slot memslots[KVM_MEMORY_SLOTS +
- KVM_PRIVATE_MEM_SLOTS];
+ struct kvm_memory_slot memslots[KVM_MEM_SLOTS_NUM];
};
struct kvm {
diff --git a/virt/kvm/kvm_main.c b/virt/kvm/kvm_main.c
index af5c988cafcc..9ad94c9996e7 100644
--- a/virt/kvm/kvm_main.c
+++ b/virt/kvm/kvm_main.c
@@ -663,7 +663,7 @@ int __kvm_set_memory_region(struct kvm *kvm,
(void __user *)(unsigned long)mem->userspace_addr,
mem->memory_size)))
goto out;
- if (mem->slot >= KVM_MEMORY_SLOTS + KVM_PRIVATE_MEM_SLOTS)
+ if (mem->slot >= KVM_MEM_SLOTS_NUM)
goto out;
if (mem->guest_phys_addr + mem->memory_size < mem->guest_phys_addr)
goto out;